Supplemental Cash Flow Information - Supplemental Cash Flow Information Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Supplemental Cash Flow Elements [Abstract]
Cash paid for income taxes	$ 169	$ 551
Non-cash investing and financing activities:
Inventory transferred to rental equipment	1,148	4,038
Inventory transferred to property, plant and equipment	172	286
Issuance of notes receivables in connection with sale of used rental equipment	$ 11,745	$ 2,665